The overall ceiling height is 9 ft with an exhaust fan cut in but there is shelving up above. The lights can pulled up quite high though if needed. I've grown 47-50" tall plants in there. Walls are painted flat white. I've used this closet for 15 yrs under hps, t5, cfl, led panels and normally I get nice yields per plant. But I always seem to have some kind of light problems and it just pisses me off. That's why I'm here. All opinions and suggestions are welcome. You have to excuse me for now. After a hard afternoon of cleaning pot including a few beers and a few puffs I'm a little stoned right now so any further response from me tonight should be considered most likely very stupid and ignored. Pipes
Lighting one more quick ?
- Thread starter Loud Pipes
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The overall ceiling height is 9 ft with an exhaust fan cut in but there is shelving up above. The lights can pulled up quite high though if needed. I've grown 47-50" tall plants in there. Walls are painted flat white. I've used this closet for 15 yrs under hps, t5, cfl, led panels and normally I get nice yields per plant. But I always seem to have some kind of light problems and it just pisses me off. That's why I'm here. All opinions and suggestions are welcome. You have to excuse me for now. After a hard afternoon of cleaning pot including a few beers and a few puffs I'm a little stoned right now so any further response from me tonight should be considered most likely very stupid and ignored. Pipes
Thanks Smo! Are the 1212's a good option for me or am I just being cheap?
What kind of potting do you use and what are their dimensions?
Do you have a grow log or something I can have a look at?
Do you have a grow log or something I can have a look at?
The renders are still going but from what I'm looking at so far 3 1825s look like a pretty good solution for your place.
More cobs just mean more additional pieces and points of failure. 3 large cobs running at 100 watts should do the trick for that space well. One of these can handle 360ish watts so running at 100 you should be able to keep them running well cool. Not cool enough for passive but a silent active solution would do well.
Here's a top view:
1825
1812
1212
1206
And the Side views:
1812 1825
1206 1212
These renders are designed simply to illustrate the light amount of these different cobs in relation to eachother, not coverage. If you want to run only your new cobs then 300 watts worth would certainly be advisable as a solid medium.
If you got any cobs you want to add to this let me know which ones, how hard you want to drive them and how many.:smoking:
More cobs just mean more additional pieces and points of failure. 3 large cobs running at 100 watts should do the trick for that space well. One of these can handle 360ish watts so running at 100 you should be able to keep them running well cool. Not cool enough for passive but a silent active solution would do well.
Here's a top view:
1825
1812
1212
1206
And the Side views:
1812 1825
1206 1212
These renders are designed simply to illustrate the light amount of these different cobs in relation to eachother, not coverage. If you want to run only your new cobs then 300 watts worth would certainly be advisable as a solid medium.
If you got any cobs you want to add to this let me know which ones, how hard you want to drive them and how many.:smoking:
Hey Druid I thought I lost you. Your still talking over my head somewhat but I'm catching on. I use 3 gal equiv air pots and must have 10-15 grows on here over the years. BOM winner in 2010 or 12-can't remember. I believe I'm under a different user name after the site crashes a few years ago but here's a fairly recent grow using a new medium- https://www.autoflower.org/threads/pipes-organic-sour-stomper-grow.54321/. I will only grow 3 plants at a time. I've grown up to 5 in there but I definitely don't need any more pot. I want to keep everything simple on this first cob build and that's why I kind of liked the design I came up with. I defiantly want to stay passive on the heat sinks. However I am finding that the 1212's that I was planning on using have pretty much disappeared off the face of this planet. I'm waiting to hear back from a couple of suppliers. You don't show any dimensions on your renderings but you have to remember my space is only 28" wide. But I'm definitely going take a look at you 3 1825 design. This does need active cooling? I'm thinking about all of this as I'm typing so if it seems as I'm changing my mind here and there it's probably because I am. 3 1825's huh? I'm checking it out! My room can get a little warm in the summer but not nearly as bad as when I used hps. Any good quality driver recommendations? I want reliability. Very tired of light problems. A big thanks for your input.
Pipes
Yeah the "rooms" are to the specs you told me. To run 3 of em a HLG-320H-C2100 would do well. That driver would run at capacity powering 3 1825s.
The amount of heat total doesn't change between 3 at 100w or 6 at 50w. So your growspace will get the same temp either way but you will only need half the pieces. It's not difficult to do active cooling. Hell I myself am using old cpu heatsinks lol.
But yeah at 100 watts per cob you would need active cooling. Or massive passive cooling. Or a massive alu extrusion heatsink with a few large low rpm fans.
The amount of heat total doesn't change between 3 at 100w or 6 at 50w. So your growspace will get the same temp either way but you will only need half the pieces. It's not difficult to do active cooling. Hell I myself am using old cpu heatsinks lol.
But yeah at 100 watts per cob you would need active cooling. Or massive passive cooling. Or a massive alu extrusion heatsink with a few large low rpm fans.
For a beginner the extra driver adds a little difficulty then mounting, fans and wiring. I'd go with 3-4 1825's on the square heatsinks from northern. Square even makes the frame build easier. They are rated for 80-100watts so 3 on those would fit the 300w recommendation. Personally I would go with 4 at 75w each. Better spread, higher efficiency, much cooler heatsinks and cobs. It's also an extra 50bucks
Thanks again for your input Druid. I was thinking that the driver I originally selected with an output voltage of 238 should be able to run 3-4 of these 54 volt chips or did I miss something. BigSmO is recommending 4 of these @75 watts which might be an option also. Drivers I can get and are the least of my problems. Finding the chips may be a problem. I'm getting ready to order parts and both Northern and cobkits are out and I don't think Cutters handle Citizen. I haven't checked ebay or Amazon yet. There seems to be a more of a demand for chips than supply. I know the active cooling won't be much of an obstacle- I just need a small fan driver. If you know of chip suppliers other than the ones I mentioned I'd appreciate it if you let me now. Anyhow you guys have been great and keep going in the right direction. Pipes
Thanks again Sm0. I assume that these are the heat sinks you're recommending https://northerngrowlights.com/collections/all/products/sst-x-passive-heatsink-1. I can decide on passive or active later. Finding the cob's seems to be a problem right now. I do like the idea of having 4 cob's. Any leads on cob suppliers? Anyhow I sure appreciate yours and Druids help on my little build. I will get it done-no turning back now. Thanks again. Pipes
I can get the 1825"s 90CRI in 3000K. I was looking for 3500K. Any idea of what kind of effect that would have on my outcome? I just want to get my hands on some cob's. I can see future demand continue to outstrip the supply or am I just being too impatient? Pipes
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